don´t show images

Hello, I recent try to use the theme, I try it in localhost firts and now I try it on server, but when I install it the theme doesn't show the images on every post, I don´t know why, first I think it was because I work in localhost, but it happens the same on server instalation, when I use my old yheme it works fine, even when I try with other themes, but no t with GP. I bought the premium version but the problem continues. I would like if you know how to solve it, and if it is not possible if you can make me a refund because I will not be able to use the theme, thanks.
Now I only have activated the old theme.